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Finding the Fourth Proportional to 93,312,812.60, 139,969,218.90 and 28,616,103.80

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Solution

The fourth proportional to 93,312,812.60, 139,969,218.90 and 28,616,103.80 is: 42,924,155.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,312,812.60 : 139,969,218.90 = 28,616,103.80 : x
  2. Step 2: Convert to fraction form
    93,312,812.60/139,969,218.90 = 28,616,103.80/x
  3. Step 3: Cross multiply
    93,312,812.60x = 139,969,218.90 × 28,616,103.80
  4. Step 4: Simplify right side
    93,312,812.60x = 4,005,373,696,847,322
  5. Step 5: Solve for x
    x = 4,005,373,696,847,322/93,312,812.60
  6. Step 6: Final answer
    x = 42,924,155.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.